func (opt *Option) ArgFloat64() (float64, error)
Maxim Konovalov Co-founder, Nginx
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On land, habitats for hedgehogs, field voles and other small mammals have been washed out, resulting in them being pushed out of their homes and drowning.，更多细节参见搜狗输入法
next1, next2 = ord(sys.stdin.read(1)), ord(sys.stdin.read(1))